<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>转义字符</title>
</head>
<body>
    <p>lalalala&ltp&gt;</p>
    <!--电脑不能区别<p>到底是段落标签还是你想显示的内容-->
    <!--&lt/&gt-->
    <!--商标的转义字符是&#8482-->
</body>
</html>